Updated with new instructions on setting up environment

readme.txt

@@ -1,6 +1,25 @@
 ------ PLEASE READ! ------
 
-User Input:
+(A) Setup:
+
+Recommended: Python 3.7 or higher
+
+Required Modules:
+
+numpy 1.19.4
+matplotlib 3.3.2
+astropy 4.1
+netcdf4 1.3.3
+cdsapi 0.2.7 (*)
+
+
+(*) for CDS API please refer to: https://cds.climate.copernicus.eu/api-how-to
+
+Alternatively, use ANACONDA and the environment(*.yml)-file in this repository.
+
+
+
+(B) User Input:
 
 1. Please define all input parameters under input/user_input.py